Rapido Trains UK Special Announcement No.1

©2024 Rapido Trains Ltd

Take a ‘peak’ at some of the most successful diesel locos of the British Railways Modernisation Plan, as Rapido Trains UK announces 2 of the most highly anticipated N Gauge locos to date! 

Rapido Trains UK is proud to announce that we will be adding the other classes of BR 1Co-Co1 ‘Peaks’ to our range of N Gauge ready-to-run models, the Class 45 and Class 46 are available to pre-order now!

In much the same way as the locos were produced in real life, the development of our N Gauge Class 45 and 46 has progressed as a continuation from the Class 44. To streamline the process and save time in production, we included the research, development and tooling for all three classes when we began development of the Class 44s.

With the success of the first Type 4 diesels, Derby Works began the development of the next generation of even more powerful locomotives, the Class 45 and Class 46. These would go on to form the bulk of the Midland mainline fleet for many years.



Despite the 45s and 46s not being named after mountains as their Class 44 counterparts had been, many were honoured with the names of famed British Army Regiments, however they still retained the nickname ‘Peaks’. 

The Class 45 and 46s were pretty much identical to the 44s, also weighing in at around 135 tonnes and powered by a diesel power unit produced by Swiss engineering company, Sulzer. However, the newer power units produced 2500 horsepower, 200 more than their predecessors.

This led to BR placing a more substantial order of 127 locos for Class 45s, this was in fact so many that Crewe Works were drafted in to assist Derby with their construction.

The first BR Class 45 locomotive entered service in late 1960, with the class soon becoming the main loco to work out of St Pancras on the Midland mainline services, demoting the dwindling number of steam locos to cover local services or freight.

The final variant of the ‘Peak’ began production in 1961, now with Brush Electrical Equipment fitted after re-tendering for the next batch of locomotives. This tweaked peak would be known as the BR Class 46.

Externally it looked almost identical, as it had the same engine and body, however, its electrical equipment had received an upgraded generator and different traction motors. Developed by the Brush Company of Loughborough these upgrades replaced the previously used Crompton-Parkinson electrical equipment of the Class 44 and 45.

In total, 56 Class 46 locomotives were produced, with the last being built in 1963.

The 45s were intended to be allocated to multiple regions during their construction and this was initially the case with locomotives allocated to London Midland and Western Region sheds as well as other regions for short stints of training. They soon settled down to more regular work on Midland mainline and Western Region services. The 46s were used for more varied work, being seen on NE-SW cross-country services, long distance freights from the West Country and some Trans-Pennine services.

With Class 45s and 46s often being seen working trains to destinations across the South West and alongside the iconic trainspotting location of Dawlish it's no wonder the loco has a soft spot in many diesel enthusiasts' hearts.

With the introduction of the HSTs on the Midland mainline and Cross Country routes, as well as the introduction of Class 56s to coal traffic, the 45s were moved to the Trans-Pennine route to work passenger services across the north of the country.

The aging fleet of well-travelled ‘Peaks’ started to be withdrawn throughout the 1980s. The last of the 44s were withdrawn in 1980, the 46s in 1984, and the final 2 Class 45s soldiered on until 1989. The last ‘Peak’, No.45106, was painted into an approximation of the original BR Green livery and regularly worked the 17:50 St Pancras – Derby service as well as a number of railtours. It sealed the fate of the class after it failed at Wellingborough with a fuel leak and onboard fire, the ignition presumed to be from brake sparks while being towed 'dead', which sadly resulted in its inevitable retirement.

Prior to retirement, the class did have one final claim to fame. No.46 009 was acquired by the BR Research department, to be used in an upcoming crash test. This famous and very public experiment would see BR test, under crash conditions, the integrity of its supposedly impenetrable Nuclear Flasks.

On July the 17^th 1984, the loco and its train were allowed to run out of control along the old Derby Test Track. With the train approaching its top speed, it crashed into a waiting nuclear flask wagon that had been positioned across the line. Unsurprisingly, the loco swiftly expired in the name of science, exploding in an impressive ball of flames and debris. The infamous footage taken on that day would be lapped up by railway enthusiasts across the world for many years to come and even turned into a short documentary (see below).

Not all of the remaining ‘Peaks’ were used as test subjects, and we can be thankful that a number of these locos would sit waiting to be scrapped until 1994, giving budding enthusiasts the perfect opportunity to preserve them. Incredibly 2 Class 44s, 12 Class 45s and 3 Class 46s were saved for preservation.

The Rapido Trains UK N Gauge BR 1Co-Co1 Class 45 and Class 46 models have been designed using a combination of archival materials and drawings.

They will be available in a variety of liveries covering the loco's almost 30-year mainline tenure, and several as-preserved examples too. In addition to a high-quality motor and drive mechanism for smooth running, a Next18 Decoder Socket, and NEM Coupler pockets, modellers can look forward to directional lighting, an etched radiator fan grill and lots of other separately-fitted parts including wipers. 

Pre-orders are now open for both Class 45 and 46 locomotives. Order yours today from any Official Retailer or direct from us.

Don’t forget the orderbook for our Class 44 locomotives will close shortly – so don’t delay and order today.